1. Recent development in Ras cheese research;Abou-Donia;Egypt. J. Dairy Sci.,2002
2. Phage resistance mechanisms in lactic acid bacteria;Allison;Int. Dairy J.,1998
3. Lactic acid bacteria;Axelsson,1998
4. Flavour forming abilities and amino acid requirements of Lactococcus lactis strains isolated from artisanal and non-dairy origin;Ayad;Int. Dairy J.,1999
5. Ayad, E.H.E., 2001. Characterisation of lactococci isolated from natural niches and their role in flavour formation of cheese. Ph.D. Thesis, Wageningen Agricultural University, Wageningen, The Netherlands, ISBN: 90-5808-403-5.